Jamb Biology Past Questions and Answers

Question 2156:

• JAMB 2019

Which of the following substances has the highest amount of energy in joules per unit weight?

A. Carbohydrates
B. Fats
C. Proteins
D. Vitamins

Question 2157:

• JAMB 2019

Which of the following pairs of scientists discovered the Rhesis factor in human blood?

A. Hooke and Lavine
B. Darwin and Landsteiner
C. Landsteiner and Lavine
D. Hooke and Darwin

Question 2158:

• JAMB 2019

The study of an individual organism or a single species of organism and its environment is

A. Autecology
B. Ecological concepts
C. Synecology
D. Biotic composers

Question 2159:

• JAMB 2019

Which of the following is a nitrifying bacterium?

A. Rhizobium
B. Nictrobacter
C. Azotobacter
D. Pseudomonas

Question 2160:

• JAMB 2019

Which of the following is the effect of using artificial pollination in plant breeding?

A. Production of healthy crops
B. Lengthening the maturity time of crops
C. Making crops susceptible to disease
D. Improvement of the variety of crops